1 : an open excavation usually for obtaining building stone, slate, or limestone
2 : a rich source
3 : the most epic party ever created which is celebrated in the woods known as 'quarry', held three times a year by the American International School of Vienna.

"Dude are you going to quarry tomorrow?"
"Yeah who the fuck wouldn't?"

The Urban Dictionary T-Shirt

"Whilst having a jaunt through the isle of makebelieve, i and my companions were ambushed by a quarry of platypus, the viscious duck-billed beavers of the south were many and we had to make our escape through the jungle back to camp lest we be stung by the mighty Alpha Male of the group!"

The Urban Dictionary T-Shirt

A slang term used in MMA (Mixed Martial Arts) to denote getting KTFO'd (Knocked The Fuck Out). The term's origin comes from a match that occured at UFC 56 between Rich Franklin and Nathan Quarry. Quarry was knocked out cold in brutal fashion by a left hand from Rich Franklin making this one of the most brutal looking knockouts in UFC history. The term is used rather liberally (mostly on MMA internet forums) at this point--essentially it is interchangeable with KTFO. But it's original intention was to denote someone being outclassed or outmatched (Quarry was undeservingly thrust into a title shot with then middleweight champion Rich Franklin for several inconsequential reasons) and then getting brutally knocked out.

Joe: What do you think is gonna happen with in the Ortiz v. Shamrock fight?